60 Annals of the Carnegie Museum. 



feeds on witch-hazel, and may be found on the lower branches of these 



shrubs. 



2238. Scopelosoma pettiti Grote. 



Pittsburgh, October 26-November 8 ; April 20-24 (Engel, Mar- 

 loff) ; Swissvale (Knechtel) ; New Brighton, April (Merrick). Rare. 

 At sugar. 



2240. Scopelosoma tristigmata Grote. 



October i6-December 2 ; March, April. Fairly common and gen- 

 erally distributed. The writer has reared the larva on wild cherry. 



2241. Scopelosoma walkeri Grote. 



October 4 to the end of April. Fairly common.. This form is 

 figured in the Proc. Ent. Soc. Philad., Vol. II, Plate IX, fig. 5, and 

 vinukfita Grote, same Plate, fig. 6. The figure of walkeri evidently 

 was drawn from a specimen taken after hibernation when its color 

 had faded. This is a common characteristic of the genus. Specimens 

 captured in April would scarcely be recognized when placed with 

 perfectly fresh material. In fresh specimens of walkeri the ground is 

 as deep reddish-brown as in sidus, although variable in both forms. 

 The structure and distinctness of the transverse lines is variable, while 

 the reniform in laalkeri is always centered by a large round spot rang- 

 ing from pale ochreous to pure white. In sidus Guenee {vinulenta 

 Grote) a semicircular white spot appears in the reniform in most speci- 

 mens, while in others this spot is orange or ochreous. 



2242. Scopelosoma sidus Guenee. 



October 1 2-April. Common at sugar. The larva has been reared 

 by the writer on wild cherry. 



2243. Scopelosoma morrisoni Grote. 



October lo-April. Common, Foodplants : oak, elm, wild cherry. 



2244. Scopelosoma devia Grote. 



Pittsburgh, October 5-January 2 ; March, April (Engel, Marloff, 

 Krautwurm). Fairly common at sugar and the sap of the sugar- 

 maple. 



2246. Glaea viatica Grote. 



Pittsburgh, October 12-23, three specimens (Marloff, Engel). 



2247. Glaea inulta Grote. 



October 4-29. Not common, but taken generally in this locality. 



2248. Glaea olivata Harvey. 



Pittsburgh, October 19-November 20; March 31-April 2 (Engel, 

 Marloff). Rare. At sugar. 



